Mining machinery



A ril 1 1924.

' w.,w. ROBBINS MINING MACHINERY Filed Dec. '4. 1920 M fiofibinsINVENTOR H18 .4 TTORNEYS Patented Apr. 1, 1924.

PATENT OFFICE.

WILLIAM w. noBBms, or LORAIN, 01110.

MINING MACHINERY.

Application filed December 4, 1920. Serial No. 428,290.

To all whom it may concern:

Be it known that I, WILLIAM W. RoBBrNs, a citizen of the United States,residing at- 'Lorain, in the county of Lorain and State of Ohio, haveinvented certain new and useful Improvements in Mining Machinery; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

' Myinvention relates to improvements in mining machinery, and moreparticularly it relates to miningmachinery of the power operated type.

f Among the objects .of my invention, are the following To provide amachine of the above character with a power operated mining tool whichmay be thrust directly into the wall of the 'vein, which machine mayberaised and lowered as a whole, so that by a series of operations, avertical channel may be made, the machine being raised one step beforeeach thrust operation or after a series of thrust operations; 7

To provide a machine of the above character with a wedge-shaped tool bymeans of which the mineral is dislodged; 7 To provide a machine of theabove character which in addition to being raised and 1owe'red,'may havethe tools set at any suitable angle, sothat the mineral may bedislodged, thereby forming a trench way;

To provide a machine of the above character which may be set so thatthe. tool may-dislodge the mineral from any side of the trench and intothe trench itself;

To provide a machine of the above charactor in which there is providedmeans directly connecting the piston with the tool head to prevent thetool from rotating;

' To provide means in the cylinder head for preventing the tool fromrotating;

To provide means for rotating the cylinder head whereby the tool may beset at any suitable angle; i

To provide certain details ofimprovenient tending to increase theelficiency and serviceability of a machine of the above character. a v

To accomplish the foregoing and other useful ends, my invention consistsof means hereinafter more fully set forth and claimed.

Referring to the ac companying drawing, Figure 1 is a view in elevationof the device. right of Figure 1. Figure 3 is a front view of a toolholder. Figure 4 is a side view in. elevation of thetool. Figure 5 isafront view in elevation of the tool. 1

On a track 2, Figure 1, there is a frame 3 on rollers 4. Mounted on thisframe, there is. ai motor 5 for driving a. chain drive 6, which isgeared with a pair of shafts 7 and 8, Figure 2. Said shafts are alsosupported on the frame 3, as will be seen. On the shaft 7, there is abeveled gear 9, which engages a corresponding beveledgear 10 on thelower end of the screw 11 which latter is. suitably journalled in theframe 3; On the opposite side of the frame, Figure 2, there is anotherscrew 1.2 similar to the screw 11 and provided at its lower end with abeveled gear "13 corresponding to the beveled gear10, which latterengages a beveled gear on the shaft 8, corresponding to thefb'eveledgear 9.

"Supported between these screws 11 and 1.2, Iprovide a cylinder-14 inwhich a piston 15 reciprocates. i i This may be controlled by water orany other suitable source of power, through the medium of pipes 16 and17 which pipes are connected to suitable intake and exhaust branches. Ontheleft end of the cylinder 14 I provide a head 18 provided with shoes19, one on each side, F1gure 2, which, bear on thesurface of the'headpiece '20 of the frame 3, andwhich slide up and down on this surfacewhen the screws 11 and 12 are op erated. This head piece may belremovedand a new one substituted if it becomes necessary, due to the wear. Thehead 18' is provided on the outside with cross shaped members 21, overwhich there is provided a plate 22. YVhen themachine is to be operatedfor Figure 2 is an end view from left to threads of the screws, therebylowering and raising the cylinder.

Connected to the piston 15 there are two piston rods 26 and 27, thepiston rod 26 passing through gland 29 in the head 28 and the piston rod27 passing through thegland 30 in the head28. This arrangement of doublepiston rods is to prevent the tool from rotating. The said piston rods26 and 27 terminate in the cross piece 31. To this cross piece, 31, thetool 32, igure 1, is attached through the medium of the screws 33.Fastened to the cylinder 14 just behind the head 28, there are a seriesof clamps 34 by means of which the cylinder head 28 is clamped and heldin position. By loosening the clamps, the head 28 may be rota-ted, sothat the tool 32 may be given any position desired.

It will be understood that I do not limit myself to this particularmethod of securing the cylinder head 28 and ofrotating this cylinderhead, as various other arrangements can be made which will serve thesame purpose equally as well. a

It will be seen therefore, that with this device after a preliminaryopening is made in the vein, the tool 32 may be operated throughthemedium of the piston 15 so as to wedge out mineral along a givenline. For example, if the opening should be at the lower left handcorner of the vein, the tool 32 may be arranged parallel to a horizontalplane and caused to bite into the vein just above the preliminaryopening, thus wedging down the mineral into the opening. The tool isthen withdrawn, the cylinder 14: raised and the tool plunged again intothe vein, which will cause still further mineral to be. wedged downwardinto the opening. This operation can be repeated and in this way avertical trench will finally result rendering available all of themineral that has been pried'loose from this trench. When the upwardlimit of the trench is reached, the tool 32 may then be rotated degreesand the frame 3 moved forward along the track 2 'a short distance. Itwill be seen when such a move is made it may also be necessary to movethe up-right 23 and lock the wheels 4:. r I

The tool 32 can then be operated again through the medium of the piston15v to bite into the vein a given distance beyond the trench, wherebythe mineral is wedged out from the vein into the upper limit of thetrench, causing the mineral to tumble down along the trench toward thefloor of the mine, from whence it may be removedby any suitablemechanism, as for example, by means of a conveyor, or any other suitablemanner.

The tool is then withdrawn, the cylinder let dropped a distance equal tothe width of the tool 32 and another bite taken in the vein and so onuntil the trench is widened all the way down. When the cylinder 14reaches its lower limit, the frame 3 is again moved toward the vein andthe same operation repeated in an upper direction, thereby furtherwidening the trench and so on, indefinitely. It will be seen that .Withthe tool 32, the widening process can be conducted on either side of thevertical trench. Or, if the original trench instead of having been madevertical, had been cut along a horizontal line the Widening processwould of course be upward, or under'certain circumstances,

downward, if necessary.

Of course the raising and lowering opera tion is controlled through themotor 5' and the operation of the tool 3 is controlled throughthe mediumof the pipes 16 and'l7.

It will be understood that although I have shown an upright 23' toreceive the thrust'of the machine when the tool is to be pressed intothe body of the'mine, this upright may be substituted by an adjustablewall having sufficientarea to permit the machine being raised andlowered and being slid along the rails 2 some distance without having toreset the same. I further wish it understoodthat although I have shownthe tool as a wedge with a straight cutting edge extending from thepoint 35 to the point 36', Figure 5, I'doj not wish to so limit, myselfto the particular type of tool which can be used.

lVhat I claim as my invention is 1. In a mining machine, in combination,a frame, wheels movab-ly supporting the frame, screw threaded membersrotatab-ly secured in a substantially vertical position in the saidframe, means carried by the'frame comprising a motor and gearing forrotating the said screw threaded members, a cylinder mounted forvertical movement in the said frame, and having screw threadedengagement with the said screw threaded members, a piston reciprocablein the cylinder,'piston rods secured to the piston and passing throughone end of the cylinder and a cutting tool secured to the said pistonrods.

2. In a mining machine, in combination, a frame substantiallyrectangular in horizon tal cross section, and comprising upright cornerposts, screw threaded upright posts,

an elongated cylinder movably mounted between the sai'd'corner posts, apiston reciprm cable in the, said cylinder andhaving two piston rodsextending through one :endof the said cylinder, a cutting tool attachedto in the said frame, the screw threads of the said posts engagingcorrespondingly threaded parts of the cylinder, means for rotating thesaid screw threaded posts, means for resisting horizontal movement ofthe said cylinder with respect to the said frame, a cutting tool andmeans operatively conmeeting the said cutting tool and cylinder forreciprocatory motion of the said tool with respect to the cylinder.

In Witness whereof, I have hereunto signed my name this 24: day ofNovember,

WILLIAM W. ROBBINS.

